261719484

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:268

約数の個数: 144

約数和(自身を含む): 716212224

約数和(自身を除く): 454492740

約数列:

[1, 2, 3, 4, 6, 12, 13, 23, 26, 31, 39, 46, 52, 62, 69, 78, 92, 93, 124, 138, 156, 169, 181, 186, 276, 299, 338, 362, 372, 403, 507, 543, 598, 676, 713, 724, 806, 897, 1014, 1086, 1196, 1209, 1426, 1612, 1794, 2028, 2139, 2172, 2353, 2418, 2852, 3588, 3887, 4163, 4278, 4706, 4836, 5239, 5611, 7059, 7774, 8326, 8556, 9269, 9412, 10478, 11222, 11661, 12489, 14118, 15548, 15717, 16652, 16833, 18538, 20956, 22444, 23322, 24978, 27807, 28236, 30589, 31434, 33666, 37076, 46644, 49956, 54119, 55614, 61178, 62868, 67332, 72943, 91767, 108238, 111228, 120497, 122356, 129053, 145886, 162357, 183534, 216476, 218829, 240994, 258106, 291772, 324714, 361491, 367068, 387159, 437658, 481988, 516212, 649428, 703547, 722982, 774318, 875316, 948259, 1407094, 1445964, 1548636, 1677689, 1896518, 2110641, 2814188, 2844777, 3355378, 3793036, 4221282, 5033067, 5689554, 6710756, 8442564, 10066134, 11379108, 20132268, 21809957, 43619914, 65429871, 87239828, 130859742, 261719484]

約数ペア:

[(1, 261719484), (2, 130859742), (3, 87239828), (4, 65429871), (6, 43619914), (12, 21809957), (13, 20132268), (23, 11379108), (26, 10066134), (31, 8442564), (39, 6710756), (46, 5689554), (52, 5033067), (62, 4221282), (69, 3793036), (78, 3355378), (92, 2844777), (93, 2814188), (124, 2110641), (138, 1896518), (156, 1677689), (169, 1548636), (181, 1445964), (186, 1407094), (276, 948259), (299, 875316), (338, 774318), (362, 722982), (372, 703547), (403, 649428), (507, 516212), (543, 481988), (598, 437658), (676, 387159), (713, 367068), (724, 361491), (806, 324714), (897, 291772), (1014, 258106), (1086, 240994), (1196, 218829), (1209, 216476), (1426, 183534), (1612, 162357), (1794, 145886), (2028, 129053), (2139, 122356), (2172, 120497), (2353, 111228), (2418, 108238), (2852, 91767), (3588, 72943), (3887, 67332), (4163, 62868), (4278, 61178), (4706, 55614), (4836, 54119), (5239, 49956), (5611, 46644), (7059, 37076), (7774, 33666), (8326, 31434), (8556, 30589), (9269, 28236), (9412, 27807), (10478, 24978), (11222, 23322), (11661, 22444), (12489, 20956), (14118, 18538), (15548, 16833), (15717, 16652)]